Segmentation Fault and crash when trying to import images on Linux

[shindaseishin]

Solution: set the "GDK_BACKEND=x11" environment variable in the .desktop file for FGU.

Trying to import images into a campaign causes FGU to crash to desktop.

OS: Ubuntu 24.04 LTS with KDE Plasma desktop (Wayland)

Rulesets tested:

Mongoose Traveller 2E
5E
Core RPG


Extensions/Themes: None

Modules Loaded: None

Steps to reproduce:

Create a new campaign in any ruleset.
Open the "Images" window from the Campaign tool box.
Click on the "import" button.
Watch as FGU disappears.


I tried running FGU from a terminal to capture any debugging info but the only message was "Segmentation fault (core dumped)". I have my system set to not generate core files but if it would be helpful I will happily turn it on and send a core file.

If there is anything else that would help debug the problem I am happy to provide it.

[LordEntrails]

EDIT: Nevermind, for some reason I was thinking the installer/updater was crashing.

Do you have MS Core Fonts installed? See the note at the bottom on this page: Installing on Linux - Fantasy Grounds Customer Portal - Fantasy Grounds (atlassian.net) (https://fantasygroundsunity.atlassian.net/wiki/spaces/FGCP/pages/996639624/Installing+on+Linux)

[shindaseishin]

Yes. I have the ms core fonts installed.

[Trenloe]

When the import image button is clicked, an operating system file selection dialog is opened. If the crash occurs without this window opening, then it might be a rights issue to the location that the file dialog is trying to open. Have you used the dialog successfully before? Or is this the first time you've tried to use it?

[shindaseishin]

The file selection box does not open. This is the first time I've tried to use it. I should have read permissions to almost all the system. Definitely everything under my home directory

[shindaseishin]

It seems to be a xorg vs Wayland issue. I restarted my session in xorg instead of wayland and now the import button works.

[damned]

Here is an older discussion on issues with File Browsing on Wayland
https://www.fantasygrounds.com/forums/showthread.php?61261-Linux-Testing/page61

[shindaseishin]

Adding the env variable to force xwayland does the trick as recommended in that thread. Thanks for the help. Marking this as SOLVED.

[damned]

Thanks for confirming.

@Moon Wizard - is this something that can be done in the installer?

[ddavison]

We have discussed adding a dev cycle for Q4 on the installers. We can add this to the list to investigate.